Finish eshell-starship.el refactor
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@ -7,15 +7,6 @@
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(require 'eshell)
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(require 'cl-lib)
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(defun eshell-starship--git-process-lines (&rest flags)
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"Run `vc-git-program' and return an array of its output lines.
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FLAGS are passed to `vc-git-program' as its arguments."
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(with-temp-buffer
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(apply 'vc-git-command t 0 nil flags)
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(if (zerop (buffer-size))
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'()
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(string-lines (buffer-substring-no-properties 1 (buffer-size))))))
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(defun eshell-starship--replace-home-with-tilda (path)
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"If PATH beings with $HOME (the environment variable), replace it with ~."
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(let ((home (getenv "HOME")))
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@ -26,7 +17,7 @@ FLAGS are passed to `vc-git-program' as its arguments."
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(concat "~/" (seq-subseq path (length home)))
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path))))
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(defun eshell-starship--prompt-cut-path (num path)
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(defun eshell-starship--limit-path-parts (num path)
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"Cut PATH down to NUM components.
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Example:
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/this/is/a/path 3-> is/a/path"
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@ -38,89 +29,107 @@ Example:
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"/")
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(string-join (last parts num) "/"))))
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(defun eshell-starship--prompt-get-dir ()
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(defun eshell-starship--get-current-dir ()
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"Get dir for `eshell-starship--prompt-function'."
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(eshell-starship--prompt-cut-path 3
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(if-let ((worktree (vc-root-dir))
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(parent (file-name-parent-directory worktree)))
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(file-relative-name default-directory parent)
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(eshell-starship--replace-home-with-tilda
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default-directory))))
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(eshell-starship--limit-path-parts
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3 (if-let ((worktree (vc-root-dir))
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(parent (file-name-parent-directory worktree)))
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(file-relative-name default-directory parent)
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(eshell-starship--replace-home-with-tilda
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default-directory))))
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(defun eshell-starship--prompt-current-branch-status (status-line)
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"Get the status char for the current branch and its remote.
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STATUS-LINE is the first line of output from \"git status --porcelain=v1 -b\"."
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(when (string-match
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"\\[\\(?:ahead \\([0-9]+\\)\\)?,? ?\\(?:behind \\([0-9]+\\)\\)?\\]$"
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status-line)
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(let ((ahead (match-string 1 status-line))
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(behind (match-string 2 status-line)))
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(defun eshell-starship--git-parse-status-headers ()
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"Parse the status headers (read from the current buffer).
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The headers are as described in the porcelain v2 section of the git-status(3)
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man page.
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The return value is a list of the form (oid head upstream ahead behind stash)"
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(let ((oid nil)
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(head nil)
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(upstream nil)
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(ahead nil)
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(behind nil)
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(stash nil))
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(while (and (char-after) (= (char-after) ?#))
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(forward-char 2)
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(cond
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((and ahead behind) ?)
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(ahead ?)
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(behind ?)))))
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((looking-at "branch\\.oid ")
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(setq oid (buffer-substring-no-properties
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(match-end 0)
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(pos-eol))))
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((looking-at "branch\\.head ")
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(setq head (buffer-substring-no-properties
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(match-end 0)
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(pos-eol))))
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((looking-at "branch\\.upstream ")
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(setq upstream (buffer-substring-no-properties
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(match-end 0)
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(pos-eol))))
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((looking-at "branch\\.ab ")
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(let ((ab-str (buffer-substring-no-properties
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(match-end 0)
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(pos-eol))))
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(when (string-match "\\(+[0-9]+\\) \\(-[0-9]+\\)$"
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ab-str)
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(setq ahead (string-to-number (match-string 1 ab-str))
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behind (string-to-number (match-string 2 ab-str))))))
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((looking-at "stash ")
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(setq stash (string-to-number (buffer-substring-no-properties
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(match-end 0)
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(pos-eol))))))
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(forward-line))
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(list oid head upstream (or ahead 0) (or behind 0) stash)))
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(defun eshell-starship--prompt-git-has-stash ()
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"Return t if the current git directory has a stash, nil otherwise."
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(zerop (process-file vc-git-program nil nil nil
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"rev-parse" "--verify" "refs/stash")))
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(defun eshell-starship--git-interpret-file-status (x y)
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"Return the prompt character for the status X and Y.
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A description of X and Y can be found in the git-status(3) man page."
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(cond
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((or (= x ?D) (= y ?D))
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?)
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((or (= x ?R) (= y ?R))
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?»)
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((= y ?M)
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?!)
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((or (= x ?A) (= x ?M))
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?+)))
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(defun eshell-starship--prompt-git-state-chars ()
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"Get chars, like + and ✘ for `eshell-starship--prompt-function'."
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(with-temp-buffer
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(when (zerop (vc-git-command t nil nil "status" "--porcelain=v1" "-b"))
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(goto-char (point-min))
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(cl-loop with command-error-function = nil
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with status-arr = nil
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with first-line = (buffer-substring-no-properties
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(point) (pos-eol))
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;; account for newline at end
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with line-count = (car (buffer-line-statistics))
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with cur-buf = (current-buffer)
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do (forward-line)
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for x_status = (char-after)
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for y_status = (char-after (1+ (point)))
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until (> (line-number-at-pos) line-count)
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do
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(cond
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((or (= ?D x_status y_status)
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(= ?A x_status y_status)
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(= ?U x_status y_status)
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(and (= ?A x_status) (= ?U y_status))
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(and (= ?U x_status) (= ?D y_status))
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(and (= ?U x_status) (= ?A y_status))
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(and (= ?D x_status) (= ?U y_status)))
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(push ?= status-arr))
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((or (= x_status ?D) (= y_status ?D))
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(push ? status-arr))
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((or (= x_status ?R) (= y_status ?R))
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(push ?» status-arr))
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((= y_status ?M)
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(push ?! status-arr))
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((or (= x_status ?A) (= x_status ?M))
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(push ?+ status-arr))
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((= x_status y_status ??)
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(push ?? status-arr)))
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finally
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(sort status-arr #'(lambda (a b)
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(cond
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((= a ?=)
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t)
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((= b ?=)
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nil)
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(t
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(< a b)))))
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(when (eshell-starship--prompt-git-has-stash)
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(if (= (car status-arr) ?=)
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(setq status-arr (append '(?= ?$) (cdr status-arr)))
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(push ?$ status-arr)))
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(when-let (branch-status (eshell-starship--prompt-current-branch-status
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first-line))
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(push branch-status status-arr))
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finally return (apply 'string (seq-uniq status-arr))))))
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(defun eshell-starship--git-interpret-branch-status (ahead behind)
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"Get the status char for the current branch and its remote.
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AHEAD should evaluate to t if the current branch is ahead of its remote, and
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BEHIND should evaluate to t if the current branch is behind its remote."
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(cond
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((and ahead behind) "")
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(ahead "")
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(behind "")))
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(defun eshell-starship--prompt-git-get-operation ()
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"Return the current git operation. For example, a revert."
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(defun eshell-starship--git-file-status (stash ahead behind)
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"Get the file status string for the git prompt module.
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STASH should be t if there is current stashed data stash. AHEAD and BEHIND
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should be as for `eshell-starship--git-interpret-branch-status'."
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(let ((merge-conflicts nil)
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(status-chars nil))
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(while (not (= (pos-bol) (pos-eol)))
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(cond
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((= (char-after) ??)
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(push ?? status-chars))
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((= (char-after) ?u)
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(setq merge-conflicts t))
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((or (= (char-after) ?1)
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(= (char-after) ?2))
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(push (eshell-starship--git-interpret-file-status
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(char-after (+ 2 (point)))
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(char-after (+ 3 (point))))
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status-chars)))
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(forward-line))
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(concat (eshell-starship--git-interpret-branch-status (not (zerop ahead))
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(not (zerop behind)))
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(when merge-conflicts "=")
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(when stash "$")
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(apply 'string (sort (seq-uniq status-chars) #'<)))))
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(defun eshell-starship--git-current-operation ()
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"Return the current git operation.
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For example, a revert. If there is no current operation, return nil."
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(let ((git-dir (expand-file-name ".git" (vc-git-root default-directory))))
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(cond
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((file-exists-p (expand-file-name "rebase-apply/applying" git-dir))
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@ -140,36 +149,48 @@ STATUS-LINE is the first line of output from \"git status --porcelain=v1 -b\"."
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((file-exists-p (expand-file-name "REVERT_HEAD" git-dir))
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"REVERTING"))))
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(defun eshell-starship--prompt-git-status ()
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"Get git status for `eshell-starship--prompt-function'."
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(let ((branch (car (vc-git-branches)))
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(state (eshell-starship--prompt-git-state-chars))
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(operation (eshell-starship--prompt-git-get-operation)))
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(concat
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(propertize (concat " " branch) 'face '(:foreground "medium purple"))
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(unless (string-empty-p state)
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(propertize (concat " [" state "]") 'face '(:foreground "red")))
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(when operation
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(concat " (" (propertize operation 'face
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'(:inherit 'bold :foreground "yellow")) ")")))))
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(defun eshell-starship--git-status ()
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"Return the text for the git module for `eshell-starship--prompt-function'."
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(with-temp-buffer
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(when (zerop (vc-git-command t nil nil "status" "--porcelain=v2"
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"--branch" "--show-stash"))
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(goto-char (point-min))
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(cl-destructuring-bind (oid head upstream ahead behind stash)
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(eshell-starship--git-parse-status-headers)
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(let ((file-status (eshell-starship--git-file-status stash ahead
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behind))
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(operation (eshell-starship--git-current-operation)))
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(concat
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(if (string= "(detached)" head)
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(propertize (concat " (" (substring oid 0 7) ")")
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'face '(:foreground "lawn green"))
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(propertize (concat " " head)
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'face '(:foreground "medium purple")))
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(unless (string-empty-p file-status)
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(propertize (concat " [" file-status "]")
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'face '(:foreground "red")))
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(when operation
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(concat " (" (propertize
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operation 'face
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'(:inherit bold :foreground "yellow")) ")"))))))))
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(defun eshell-starship--prompt-vc-status ()
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(defun eshell-starship--vc-status ()
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"Get vc status for `eshell-starship--prompt-function'."
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(if-let (backend (vc-responsible-backend default-directory t))
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(if (eq backend 'Git)
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(eshell-starship--prompt-git-status)
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(eshell-starship--git-status)
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(propertize
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(concat " " (downcase (symbol-name backend)))
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'face '(:foreground "purple")))))
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(defvar-local eshell-starship--prompt-last-start-time nil
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(defvar-local eshell-starship--last-start-time nil
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"Start time of last eshell command.")
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(defun eshell-starship--prompt-timer-pre-cmd ()
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(defun eshell-starship--timer-pre-cmd ()
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"Command run before each eshell program to record the time."
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(setq eshell-starship--prompt-last-start-time (current-time)))
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(setq eshell-starship--last-start-time (current-time)))
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(add-hook 'eshell-pre-command-hook #'eshell-starship--prompt-timer-pre-cmd)
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(add-hook 'eshell-pre-command-hook #'eshell-starship--timer-pre-cmd)
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(defun eshell-starship--prompt-format-span (span)
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"Format SPAN as \"XhXms\"."
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@ -182,12 +203,12 @@ STATUS-LINE is the first line of output from \"git status --porcelain=v1 -b\"."
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(format "%dm" mins))
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(format "%ds" secs))))
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(defun eshell-starship--prompt-last-command-time (end-time)
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(defun eshell-starship--last-command-time (end-time)
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"Return the prompt component for the time of the last command.
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END-TIME is the time when the command finished executing."
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(if-let ((eshell-starship--prompt-last-start-time)
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(if-let ((eshell-starship--last-start-time)
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(len (time-subtract end-time
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eshell-starship--prompt-last-start-time))
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eshell-starship--last-start-time))
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(float-len (float-time len))
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((< 3 float-len))
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(int-len (round float-len)))
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@ -198,14 +219,14 @@ END-TIME is the time when the command finished executing."
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(defun eshell-starship--prompt-function ()
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"Function for `eshell-prompt-function'."
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(let* ((end-time (current-time))
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(dir (eshell-starship--prompt-get-dir))
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(dir (eshell-starship--get-current-dir))
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(prompt (concat
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"\n"
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(propertize dir 'face '(:foreground "dark turquoise"))
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(unless (file-writable-p dir)
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" ")
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(eshell-starship--prompt-vc-status)
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(eshell-starship--prompt-last-command-time end-time)
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(eshell-starship--vc-status)
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(eshell-starship--last-command-time end-time)
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(propertize "\n" 'read-only t 'rear-nonsticky t)
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(propertize
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"❯ " 'face `(:foreground
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@ -213,7 +234,7 @@ END-TIME is the time when the command finished executing."
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"lime green"
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"red"))
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'rear-nonsticky t))))
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(setq eshell-starship--prompt-last-start-time nil)
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(setq eshell-starship--last-start-time nil)
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prompt))
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(defvar-local ehsell-starship--restore-state nil
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